教学干预：提升混合课程质量的关键因素

Teaching Intervention: Key Factor to Improve the Quality of Blended Courses

Open online course combined with traditional teaching in colleges and universities， making blended courses in campus became the main stream learning form in the future. After the literature review on teaching interventions， the current study proposes a teaching intervention framework for improving the quality of blended courses， starting with dynamic design courses， selected prediction demand， model and type of intervention. The study conducted quasi- experiments based on three types six interventions for two years. The findings indicated that intervention on class level had positive impact on stimulating students’ online learning groups involvement; blended intervention establish tighter social learning networks than traditional one， both deep and shallow intervention played positive role for low achievement students， however students in middle score benefit more from deep intervention. In summary， effective teaching based on intervention， not only is the basis of dynamic designing， but also the key to improve the quality of blended courses on campus.